Virgin Mobile USA (NYSE: VM) has appointed SK Telecom’s Richard Chin and Sungwon Suh to its board following the acquisition of Helio and SK Telecom’s investment in the company.

—Chin is President of SK Telecom Americas, a U.S. subsidiary of SK Telecom (NYSE: SKM). In this role, he is responsible for all of the company’s U.S. businesses, with a goal of developing various opportunities to access and penetrate the market.

—Suh is EVP and Head of Global Strategy and Investment for SK Telecom. In this role, he oversees the company’s overall globalization drive through partnerships and acquisitions. He was a member of the board for Helio.